org.geotools.filter.visitor
Interface Interpolate

All Superinterfaces:

Expression, Function

@XmlElement(value="Interpolate")
public interface Interpolate
extends Function

Interpolation: Transformation of continuous values by a function defined on a number of nodes. This is used to adjust the value distribution of an attribute to the desired distribution of a continuous symbolization control variable (like size, width, color, etc). In case the Categorize (or Interpolate) function is used inside a RasterSymbolizer as a ColorMap, the LookupValue is set to the fixed value “Rasterdata”.

Author:

Johann Sorel (Geomatys)

Field Summary

Fields inherited from interface Expression

NIL

Method Summary

List<InterpolationPoint>	getInterpolationPoints() See InterpolationPoint for details.
Expression	getLookupValue() Get lookup value.
Method	getMethod() Get the interpolation method.
Mode	getMode() Get the interpolation mode.

Methods inherited from interface Function

getFallbackValue, getFunctionName, getName, getParameters

Methods inherited from interface Expression

accept, evaluate, evaluate

Method Detail

getLookupValue

@XmlElement(value="LookupValue")
Expression getLookupValue()

Get lookup value.

Returns:

Expression

getInterpolationPoints

List<InterpolationPoint> getInterpolationPoints()

See InterpolationPoint for details.

getMode

@XmlElement(value="Mode")
Mode getMode()

Get the interpolation mode.

Returns:

LINEAR, COSINE or CUBIC.

getMethod

@XmlElement(value="Method")
Method getMethod()

Get the interpolation method.

Returns:

NUMERIC or COLOR